Tray for gas-purifying tanks.



J. B. LARSON. TRAY FOR GAS PURIFYING TANKS.

APPLICATION I'ILED MAR. 30, 1911. Y 1,033,809, Patented July 30,1912.

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ByJa'sAZZOMwyJI J. B.' LARSON.

TRAY FOR GAS PURIPYING TANKS.

APPLICATION FILED MAR. 30, 1911.

1,033,809. Patented July 30, 1912.

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' verse section taken on the line 00* 112* JOHN B. LABS 0N, 0F MINNEAPOLIS, MINNESOTA ASSIGNOR OF ONE-FOURTH TO EMIL BOTH OF MINNEAPOLIS,

T. ENG-STBOM AND ONE-FOURTH '10 WILLIAM M. HIGLEY,

MINNESOTA, AND ONE-FOURTH T0 3N0.

MINNESOTA B. LEE COMPANY, A CORPORATION-OF TRAY FOB GAS-PUBIFYING TANKS.

Specification of Letters Patent.

Patented July 30, 1912..

Application filed March 30, 1911. Serial No. 617,881.

To all whom it may concern:

'Be it known that I, Jon-N B. LARSON, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain newv and useful Improvements in Trays for Gas-Purifying Tanks; and I do hereby de-= end, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate my invention, like characters indicate like parts throughout the several views.

Referring to the in vertical section taken through a gas purifying tank and showing my improved trays applied therein; Fig. 2 is a plan view, with parts broken away, illustrating the construction of the improved tray; Fig. 3 is a vertical section taken on the irregular line as m of Fig. 2; Fig. 4 is an enlarged transof Fig. 2; and Fig. 5 is an enlarged transverse section taken on the line w m of Fig. 2.

The gas purifying tank or box 1 is of the usual or any suitable construction and may be either round or rectangular in cross section. It is shown as provided with a detachable cover 2 secured thereto with a gas tight joint, by bolts or any other suitable devices, not shown. The gas is delivered into the bottom of the tank through a supply pipe 3 and-is drawn from the top of the said tank through a gas out-let pipe 4:,

- which, as shown, is extended down'through drawing, Figure 1 is, a view partly in side elevation and partly thereof will answer for the description of both. The tray is made up of a multiplicity of horizontally disposed and horizontally spaced parallel wooden strips 6 and 7, and transverse spacing and supporting cleats 8 and 9. The lower wooden cleats 8 rest directly upon the fixed supporting bars 5 while the upper wooden cleats 9 are interposed between the lower strips or boards 6 and the upper strips or boards 7. Said boards 6 and 7, it will be noted, are staggered in respect to each other, so that the gas, in passing upward through the tray,

will take a zig-zag course, as lndicated by arrows marked on Fig. 5. Certain of the cleats of the lower cleats 8, to-wit, as shown, alternate members, are provided with rigidly secured upwardly projectlng wooden dowel pms 10 and 11, the former of which project above the cleats 8 into which they are inserted, preferably, about three times as far as the relatively short dowel pins 11. These long and short dowel pins are alternated. The short dowel pins 11 are adapted to engage cooperating half seats or semi-circular notches formed in the abutting ends of the lower boards 6. The long dowel pins 10 project upward through perforations in the upper spacing cleats 9 and their upper ends engage with cooperating half seats or semi-circular notches formed in the abutting ends of the upper boards 7. This arrangement, asis obvious, aflords simple and eflicientmeans for detachably connecting the component members of the tray without the use of either nails or bolts. Hitherto, the parts ofthe tray have usually been connected either by nails or by bolts which can be aplied and removed by considerable work and, furthermore, these metallic parts, under the chemical action due to contact therewith of the gas in purifying material supported on the tray, rapidly corrode.

In building up the improved tray, the

lower cleats 8 are first laid upon the supare applied on top of the boards 6, as shown, with the perforated members thereof being slipped over the long dowel pins 10. Then, and finally, the upper boards 7 are laid with their notched ends properlv engaged with the upper ends of the said long dowel pins 10. When the tray is to be taken apart for cleaning or for other purposes, the above described order of assembling the parts thereof is reversed.

In Fig. 1, the filtering and purifying material, usually made up of wooden shavings and iron shavings, and certain other elements, is indicated by the character Y. This purifying or filtering material has nothing to do with my present invention which relates only to the improved tray for supporting the filtering material in such: manner that the gas will find free passage,

through the entire body thereof.

What I claim is:

1. A tray for gas purifying tanks made up of upper and lower transverse supporting and spacing cleats, certain of the said lower cleats having upwardly projecting relatively 5 long and relatively short dowel pins, and

lower and upper overlapped boards, the, latter being placed upon the said lower: cleats and having end notches engaging the said short dowel pins, and the upper boards being placed upon the upper cleats and having notched ends engaging the upper ends of said long dowel pins.

2. In a tray for gas purifying tanks, the; combination wit-h lower and upper transverse cleats, the former having alternated relatively short and long dowel pins, and the said upper cleats having perforations through which the said long dowel pins are passed, overlapped lower and upper boards,

the former being interposed between the said upper and lower cleats and having end notches that engage the said short dowel pinsand the said upper boards being placed upon the said upper cleats and having end "notches that engage the upper ends of said long dowel pins, substantially as described.

3. A tray for gas purifying tanksmade up of upper and lower transverse'supporting and spacing cleats, certain of the said lower cleats having upwardly projecting dowel pins, and lower and upper boards in staggered arrangement, the latter being placed upon the lower cleats and having end notches engaging certain of the said dowel pins, and theupper boards being placed upon the upper cleats and having notched ends engagmg certain of the said dowel pins, substantlally as described.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN B. LARSON. Witnesses: 

